I think V500DK2-CKS2 is the same tcon board as the Vizio p502ui-b1e
V420DK1-KS1 panel specs are here
If it's the same panel it should be . Usually the panel makers supply the T con boards for *their * panels .
OTOH I thought Visio used AUO panels on the 4K 50" ofc they have 2 different 50"s with different panels so it could be an Innolux panel .
OTOH the CapXcon capacitors on the PSU board don't look real encouraging those things have a (notoriously bad )reputation.
Usually in a Sony or Samsung you see Rubycons, Nichions ,Samxon or something like that these days .
That CapXcon stuff is on the notorious badcaps list at
badcaps.net
If that's the innards of a Quasar or Polaroid with CapXcon caps ........we know one place they cut costs now
I think Eagle brand( or something) Owns Polaroid and Emerson and has them made in China somewhere at some unknown factory . Innolux panels can be OK though.
Only a few solid caps in there on the tuner/vid board . Assembly looks pretty crude also especially all that electric tape and the nasty looking cable routing nothing like you would see in an LG,Samsung or Sony . I have one of each of those here they are obsessively neat inside .
I'll stick to Sony and Samsung TV's after seeing that...... reminds me of a couple of Dynex I fixed ( bad capacitors ) not that old either .
I just bought a new Acer 27" 2560 x1440 PC monitor it has a higher pixel density than a 40- 50" 4K TV very detailed,good color and sharp text in Windows 10 , not a MAC retina but real good and a 300 Nit AUO panel .
Acer 2560P screen is good on the desktop here ,excellent for reading or casual editing . I have my 40" 2013 Sony TV adjacent to it for videos ,second screen or whatever from the PC in here also and the big Sammy Plasma out frt. for PS3 and Movies.